HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 559

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Contention between Overflow/Underflow and Counter Clearing: If overflow/underflow and
counter clearing occur simultaneously, the TCFV/TCFU flag in TSR is not set and TCNT clearing
takes precedence.
Figure 10.56 shows the operation timing when a TGR compare match is specified as the clearing
source, and H'FFFF is set in TGR.
Figure 10.56 Contention between Overflow and Counter Clearing
TCNT input
clock
TCNT
Counter
clear signal
TGF
TCFV flag
φ
H'FFFF
Prohibited
Rev.6.00 Sep. 27, 2007 Page 529 of 1268
Section 10 16-Bit Timer Pulse Unit (TPU)
H'0000
REJ09B0220-0600